JPH09101558A - Camera jump setting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need of winding a film forward rapidly with shutter action on a manufacturing line and at the time of inspecting and further, a dead time and trouble to wind the film forward rapidly by inhibiting the feeding of a film with a photographing possible state, when the fact that the loaded film cartridge is a dummy cartridge is detected. SOLUTION: A dummy cartridge detecting means is provided and when the fact that the loaded film cartridge is the dummy cartridge is detected by the dummy cartridge detecting means, the feeding of the film with the photographing possible state is inhibited by a control circuit 2. By such a constitution, on the manufacturing line and at the time of inspecting, the dummy cartridge of ISO 3200 or more is loaded in a camera, so that even if a film counter is from S until I and a switch PWS for winding the reel of film forward rapidly is turned on, the winding of a frame can be stopped by a shutter releasing operation by a release button S2, without winding the reel of film forward rapidly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film jump setting device for a camera, which sets whether or not a film jump operation is performed depending on the ON / OFF state of a jump switch.

[0002]

2. Description of the Related Art Conventionally, in this type of jump feed setting device, a jump feed switch for turning on the film counter until the display of the film counter changes from "S" to "1" and setting the operation state of the film jump feed is provided. The idle feed operation is set to be activated / deactivated only depending on the ON / OFF state of the idle feed switch.

[0003]

However, in such a conventional jump feed setting apparatus, the film counter display is not required in the camera manufacturing line and during inspection, although there is no need to feed the film in advance. When is “S”, the jump feed switch is turned on, so it is necessary to perform the jump feed operation until the film counter display becomes “1”, which is a waste of time. Had the problem of increasing costs.

The present invention has been made in view of the above-mentioned conventional problems, and eliminates the waste of time and troublesomeness required for film idling by eliminating the need for film idling at the manufacturing line and inspection. It is an object of the present invention to provide an idle feed setting device for a camera.

[0005]

In order to achieve this object, the present invention has a jump feed switch, and activates / deactivates the idle feed operation according to the ON / OFF state of the jump feed switch. In a jump feed setting device for a camera to be set, other than the jump feed switch, a plurality of other switches provided on the camera, for example, detection means for detecting the switch state of an existing DX code and film detection switch; When the switch state of the plurality of other switches detected by the detecting means in the setting state of the idling operation by the above is a predetermined specific combination, that is, the specification that never occurs in the shooting operation using the normal film And a prohibiting means for prohibiting the film idling only when the switch states are combined.

In the jump feed setting device for a camera of the present invention having such a structure, when the film counter display is between "S" and "1", the jump feed switch performs film jump operation. Even if it is set, for example, by loading a dummy film cartridge with film sensitivity that is rarely used normally in the camera, multiple switches other than the jump feed switch can be combined in a specific switch state. As a result, the film idling operation can be easily prohibited, and the film idling at the manufacturing line and the inspection can be made unnecessary without inconvenience to the normal photographing operation, thereby eliminating waste of time and trouble. Furthermore, when the film feeding error occurs in the normal shooting operation, it becomes easy to determine which switch is wrong as an accidental product.

[0007]

FIG. 1 is a block diagram showing an embodiment of the present invention. First, the configuration will be described. 1 is a power source using a battery, 2 is a CP for controlling a camera sequence
A control circuit using U, 3 is a drive circuit for receiving a signal from the control circuit 2 to perform strobe control and film winding / rewinding drive, 4 is a motor for film winding and rewinding, and 5 is a control circuit 2 And a strobe circuit controlled by the driver circuit 4 to emit strobe light.

For the control circuit 2, the DX section switch 6, the barrier switch BSW, the half-push switch S1, the release switch S2, the midway rewind switch MUS, the film detection switch FSW, and the film feeding switch FS.
S and the idle feed switch PWS are connected. The functions of these switches will be described. First, the DX intercept switch 6
Inputs a bar code signal (3 bits) to the control circuit 2 by contact with a bar code on the surface of the film patrone encoded by the ISO speed of the film when the film patrone is loaded in the camera. The barrier switch BSW is turned off when the barrier provided for dustproofing and protection of the taking lens is closed and turned on when the barrier is opened. The half-push switch S1 is a switch that operates in conjunction with the release button, and is turned on by the first-step depression operation (half-push operation) of the release button. The release switch S2 is a switch that is turned on by the second-step pressing operation (deep pressing operation) of the release button to perform the shutter release operation.

Further, the midway rewinding switch MUS is a switch for manually instructing film rewinding, and is turned on by pressing the rewinding button. Film detection switch FSW
Is turned on when the film is normally loaded in the camera and the film is transferred to the position behind the photographing opening so that the film can be fed. The film feeding switch FSS is a switch that repeatedly turns on and off when a film is fed,
Specifically, the film is turned on and off eight times while winding one film frame, and as a result, an 8-pulse signal is input to the control circuit 2 for winding one film film. The jump feed switch PWS is a switch which is turned on when the film counter (frame counter) is in front of the film frame from "S" to "1", and in the normal shooting operation, the jump feed switch PWS is in the on state. , Half-press switch S
By the half-pressing operation of the release button that turns on 1 and the deep-pressing operation of the release button that turns on the release switch S2 (second-step pressing operation), film skipping until the film counter reaches “1” is performed. Done.

Whether or not the film is fed by the control circuit 2 is determined based on the states of the feed switch PWS, the feed switch PWS, the DX section switch 6 and the film detection switch FSW. , Which will be described in detail with reference to a flowchart showing the subsequent operation. A strobe trigger signal TRS is given from the control circuit 2 to the driver circuit 3, and the strobe trigger signal TRS is amplified by the driver circuit 3 and given to the strobe circuit 5 as a TRi signal. TR is at H level
The i signal also becomes H level, and strobe light emission driving is performed in the strobe circuit 5.

Next, the operation of the embodiment of FIG. 1 will be described with reference to the flowchart of FIG. The operation flow of FIG.
When the barrier is opened, the barrier switch BSW is turned on, and the release button is pushed to the first step (half-push operation).
It starts when the half-push switch SW1 is turned on. When the flowchart of FIG. 2 starts, first in step 10, power hold processing is performed. In this power hold processing, processing such as power hold set, initial set and flag set is performed.

Next, in step 12, AF power-on processing is performed to perform processing such as power-on of the AF circuit (not shown) and quick charging. Then, in step 14, the power control switch state processing is performed. This power control switch state processing is performed by the half-press switch S1 and the midway rewind switch MU.
The state of each power supply control switch of S is read, which power supply control switch is used to confirm the start-up, and the activated switch is latched.

In the next step 16, as the stepping motor ON processing, the stepping motor for driving the lens and the sector is energized, and then the DX code processing of step 18 is proceeded to. Next, proceed to the DX code processing in step 18,
The DX code signal detected by the DX intercept switch 6 is read, data processing of the DX code signal is performed, and the process proceeds to the next step 20.

In step 20, a battery check is performed to determine whether or not the voltage of the power source 1 has dropped. If the power source voltage is sufficiently secured, the process proceeds to the lens reset process of the next step 24, while the power source voltage is changed. If the voltage is lower than the specified voltage, the power supply to the stepping motor is turned off in step 22, and the process returns to the power hold process in step 10.

If the power supply voltage is normal, step 2
In the lens reset process when the process proceeds from 0 to step 24, it is checked whether the lens is in the reset state,
If the lens is not in the reset state, it is set in the reset state and the energization of the stepping motor is stopped in the processing of the next step 26. Then, in step 28, MUS processing is performed. In this MUS processing, midway rewind switch MU
It is determined whether or not S is turned on, and the midway rewind switch MU
If S is off, the routine proceeds to the next step 30, where automatic focus detection processing (AF processing) is performed.

Then, in each of steps 32, 34 and 36, the respective switch states of the idle feed switch PWS, the DX section switch 6 and the film detection switch FSW are checked. That is, first, in step 32, the switch state of the idle feed switch PWS is checked. At this time, if the idle feed switch PWS is on, that is, the film counter is at the frame position from "S" to before "1". In this case, it is necessary to feed the film until the film counter reaches "1". In this case, since it is not necessary to make the strobe emit light, the process proceeds to the non-emission mode latch process of step 40.

On the other hand, when the idle feed switch PWS is off,
That is, when the film counter is "1" or more, it can be estimated that the normal photographing operation is performed, and the process proceeds to the next step 34. In step 34, it is checked whether or not the DX code signal (3 bits) from the DX intercept switch 6 read in step 18 is at the L level for all bits. Where DX
The DX code that makes the code signal 3-level for all 3 bits is I
It is a film of SO3200 or higher.
If a film of less than SO3200 is not used and the film of less than ISO3200 is used, SB (strobe) in the normal shooting operation of step 38 is assumed as a film loaded by a normal shooting operation.
Proceed to the light emission determination process.

On the other hand, in the case of a film of ISO 3200 or higher in which all the bits of the DX code are at the L level, there is little possibility of being a film that is normally used. Proceed to step 36 of. In step 36, the ON state of the film detection switch FSW is checked. If the film is normally loaded and fed at this position, the film detection switch FSW is ON,
Similar to the case of the film discrimination of less than ISO3200 in step 34, the process proceeds to the SB emission discrimination process of step 38.

However, in step 34, the ISO 32
Although it is determined that there are more than 00 film cartridges, the film detection switch FSW is off in step 36, that is, the film is not normally loaded and is not in the feeding position. In step S40, the process proceeds to the state control process of the release switch S2 in step 42 through the non-light emitting mode latch process of step 40.

After that, the process proceeds to the SB light emission determination process in step 38, the light emission or non-light emission mode is latched based on the result of photometry, and then the process proceeds to the state control process of the release switch S2 in step 42. In the state control process of the release switch S2 in step 42, the release button S2 is turned on by the second-step pressing operation of the release button (deep pressing operation). Then, the process proceeds to the lens / exposure control process in step 44, the lens is moved to the in-focus position based on the AF process result in step 30, exposure control (shutter release operation) including strobe light emission / non-light emission, and lens reset are performed. Perform a series of shooting control processing such as returning to the position,
Proceed to the film winding process in step 46.

FIG. 3 is a flow chart showing a subroutine of the film winding process shown in step 46 of FIG. That is, in the main routine of FIG. 2, when the process proceeds to the film winding process of step 46, the process moves to the subroutine of FIG. 3, the feeding pulse counter is first reset in step 60, and the motor winding start process is performed in step 62. Next, in step 64, the timer is set to 1 second and at the same time, the timer is started. If the feeding pulse is not input within 1 second set in step 66, the timer end is checked in step 72, and the timer is started. When one second has passed, the timer end is discriminated and the process proceeds to step 74 to latch the film rewind mode, and further, in step 76, the motor winding is stopped, and in step 78, the motor brake process is performed to execute the main routine of FIG. Return.

If the feeding pulse is input within 1 second from the timer start in step 66, step 68
Step 64, until 8 feeding pulses are input,
The process of 66 is repeated, and when eight feeding pulses are input, that is, when one frame of film is fed, the process proceeds to step 70. In step 70, the idle feed switch PW
Checking ON and OFF of S, jump feed switch P
If WS is off, the motor winding is stopped in step 70, the motor braking process is executed in step 78, and the process returns to the main routine of FIG.

On the other hand, in step 70, the idle feed switch PW
When it is determined that S is ON, the process proceeds to step 80, where it is determined whether all 3 bits of the DX code signal are L level, and 3
When all bits are not at L level, that is, ISO
When a film having a film speed of less than 3200 which is likely to be normally used is loaded, the mode is returned to the step 60 to reset the counter of the feeding pulse. On the other hand, when all the 3 bits of the DX code signal are at the L level, that is, when a film having a film sensitivity that is less likely to be used in normal shooting of ISO 3200 or higher is loaded, the routine proceeds to step 82, where the film detection switch FSW is set. Judge on.

In step 82, the film detection switch FS
When W is ON, the film is in the ISO 3200 or higher position and is in a position where the film is normally fed and fed. Therefore, the process returns to step 60 to reset the feeding pulse count. On the other hand, when the film detection switch FSW is off, the film is not normally in the position where it is normally loaded and fed in spite of the fact that the film of ISO3200 or more is contained in the specific mode (that is, the blank feed prohibition mode). Therefore, the motor winding stop in step 76 and the motor braking process in step 78 are performed, and then the process returns to the main routine of FIG.

That is, in step 70, the idle feed switch P
It is determined that the WS is on, and in step 80, the ISO 32 is set.
Despite the fact that the film loading of 00 or more is discriminated, when the film detection switch FSW is off in step 82, the process does not shift to the idling mode to return to step 60, but a specific mode for prohibiting idling is set. I am trying to become.

In the main routine of FIG. 2 returned from the subroutine of FIG. 3, it is checked in step 48 whether the film winding mode is set. If it is not in the film winding mode, the process proceeds to the processing state of the power control switch in step 50. A series of operations ends. On the other hand, when the film rewind mode is determined in step 48, the process proceeds to the film rewind process of step 52, and after the film rewind operation is completed, the power control switch state process of step 50 is performed to perform a series of operations. finish.

FIG. 4 is an operation table summarizing the operation according to the state of each switch in the flow charts of FIGS. 2 and 3. The film detection switch FSW is off even if the idle feed switch PWS is on, and the DX code signal 3 When all the bits are at the L level, "1 frame winding stop" occurs, and the normal "idle feed 4 frame winding stop" film skipping operation is prohibited, and normal 1 frame winding is performed. still,
In the operation table of FIG. 4, the setting states of the strobe light emission mode (automatic light emission) and the strobe non-light emission mode are shown together.

Next, in the flow charts of FIGS. 2 and 3, the film detection switch FSW is operated when the idle feed switch PWS shown in the operation table of FIG. 4 is on and all 3 bits of the DX code signal are L level. In order to create a blank feed prohibition state in which is turned off, prepare a dummy film cartridge with a bar code on the surface that encodes the film sensitivity of ISO 3200 or higher and load this dummy cartridge into the camera. Even when the feed switch is in the ON state, it is possible to easily create a prohibited state of film skipping.

That is, the ISO 32 is used in the manufacturing line and inspection.
By loading a dummy patrone of 00 or more in the camera, the film jump operation can be performed even if the film counter is in front of "S" to "1" and the film jump switch PWS is turned on. The shutter release operation by the release button can be used to stop the winding of one frame, and the conventional blank feed operation for setting the film counter display to "1" or more is not required. The unnecessary time and troublesomeness is eliminated, and the working time in the manufacturing line is shortened, resulting in cost reduction.

Further, since the existing DX setting switch and film detection switch are used as the switch means for obtaining a specific switch state for prohibiting the idling when the idling switch PWS is on, the idling is prohibited. Therefore, it is not necessary to separately provide a new switch means.

[0031]

As described above, according to the present invention, a film dummy cartridge which is not likely to be normally used in a camera is loaded in the camera even though the idle feed operation is set by the idle feed switch. Since a plurality of other switches, that is, a combination of specific switch states of the DX code detection switch and the film detection switch can be used to prohibit the idling operation, the idling of the film at the manufacturing line and the inspection is unnecessary, By eliminating unnecessary time and troublesome work required for film idling, it is possible to significantly reduce costs by improving production efficiency.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of FIG.

3 is a flowchart showing a film winding process subroutine in the flowchart of FIG.

4 is an operation table collectively showing film winding operations according to respective switch states in the flowcharts of FIGS.

[Explanation of symbols]

 1: Power supply 2: Control circuit (CPU) 3: Driver circuit 4: Motor 5: Strobe circuit 6: DX section switch (DX code detection switch) S1: Half press switch S2: Release switch MUS: Halfway rewind switch FSW: Film Detection switch FSS: Film feed switch PWS: Jump feed switch

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[Procedure amendment]

[Submission date] July 1, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

[Means for Solving the Problems] Predetermination following film loading
When the motion is made, the film is fed to a state where it can be photographed.
The film counter indicates that it has not been sent.
If the loading of the film cartridge is detected
Film feed to feed the film to a ready-to-shoot state.
In the feeding device, a dummy cartridge detection means is provided,
By the dummy cartridge detecting means,
Detects that the film cartridge is a dummy cartridge
If the film is loaded, the predetermined operation following the film loading is not performed.
If the film is shot, the film is
The film counter indicates that it has not been sent.
Even if the loading of the film cartridge is detected,
It is forbidden to feed the film until it is ready for shooting.
That's what I did.

Claims (3)

[Claims] 1. A jump feed setting device for a camera, which has a jump feed switch, and sets activation / non-activation of the jump feed operation according to the ON / OFF state of the jump feed switch, wherein A detection means for detecting the switch states of a plurality of other switches provided on the camera; and the switch states of the other plurality of switches detected by the detection means in a preset state of the idle feed operation by the idle feed switch are predetermined. A jump feed setting device for a camera, comprising: a prohibition means for prohibiting the jump feed operation only when a specific combination is obtained. 2. The camera according to claim 1, wherein the prohibiting means prohibits film skipping in the case of a combination of switch states that does not occur in a shooting operation in which a normal film is loaded. Feed setting device. 3. The prohibition means is provided only when the output state of the DX code detection switch detected by the detection means is a code detection output other than the film normally used and the detection output of the film detection switch is not obtained. 2. The jump feed setting device for a camera according to claim 1, wherein the jump feed of the film is prohibited.